kernel/git/stable/linux.git/drivers/bus, branch linux-6.0.y

bus: mhi: host: Fix race between channel preparation and M0 event

2023-01-07T10:15:58+00:00

commit 869a99907faea6d1835b0bd0d0422ae3519c6ea9 upstream. There is a race condition where mhi_prepare_channel() updates the read and write pointers as the base address and in parallel, if an M0 transition occurs, the tasklet goes ahead and rings doorbells for all channels with a delta in TRE rings assuming they are already enabled. This causes a null pointer access. Fix it by adding a channel enabled check before ringing channel doorbells. Cc: stable@vger.kernel.org # 5.19 Fixes: a6e2e3522f29 "bus: mhi: core: Add support for PM state transitions" Signed-off-by: Qiang Yu Reviewed-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/1665889532-13634-1-git-send-email-quic_qianyu@quicinc.com [mani: CCed stable list] Signed-off-by: Manivannan Sadhasivam Signed-off-by: Greg Kroah-Hartman

bus: ixp4xx: Don't touch bit 7 on IXP42x

2022-12-02T16:43:11+00:00

commit ff5a19909b49fe5c0b01ae197f84b741e0f698dc upstream. We face some regressions on a few IXP42x systems when accessing flash, the following unrelated error prints appear from the PCI driver: ixp4xx-pci c0000000.pci: PCI: abort_handler addr = 0xff9ffb5f, isr = 0x0, status = 0x22a0 ixp4xx-pci c0000000.pci: imprecise abort (...) It turns out that while bit 7 is masked "reserved" it is not unused, so masking it off as zero is dangerous, and breaks flash access on some systems such as the NSLU2. Be more careful and avoid masking off any of the reserved bits 7, 8, 9 or 30. Only keep masking EXP_WORD (bit 2) on IXP43x which is necessary in some setups. Fixes: 1c953bda90ca ("bus: ixp4xx: Add a driver for IXP4xx expansion bus") Signed-off-by: Linus Walleij Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221122134411.2030372-1-linus.walleij@linaro.org Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

bus: sunxi-rsb: Support atomic transfers

2022-12-02T16:43:03+00:00

[ Upstream commit 077686da0e2162c4ea5ae0df205849c2a7a84479 ] When communicating with a PMIC during system poweroff (pm_power_off()), IRQs are disabled and we are in a RCU read-side critical section, so we cannot use wait_for_completion_io_timeout(). Instead, poll the status register for transfer completion. Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus") Signed-off-by: Samuel Holland Reviewed-by: Jernej Skrabec Link: https://lore.kernel.org/r/20221114015749.28490-3-samuel@sholland.org Signed-off-by: Jernej Skrabec Signed-off-by: Sasha Levin

bus: sunxi-rsb: Remove the shutdown callback

2022-12-02T16:43:03+00:00

[ Upstream commit 5f4696ddca4b8a0bbbc36bd46829f97aab5a4552 ] Shutting down the RSB controller prevents communicating with a PMIC inside pm_power_off(), since that gets called after device_shutdown(), so it breaks system poweroff on some boards. Reported-by: Ivaylo Dimitrov Tested-by: Ivaylo Dimitrov Acked-by: Jernej Skrabec Fixes: 843107498f91 ("bus: sunxi-rsb: Implement suspend/resume/shutdown callbacks") Signed-off-by: Samuel Holland Link: https://lore.kernel.org/r/20221114015749.28490-2-samuel@sholland.org Signed-off-by: Jernej Skrabec Signed-off-by: Sasha Levin

bus: mhi: host: Fix up null pointer access in mhi_irq_handler

2022-08-29T17:03:46+00:00

The irq handler for a shared IRQ ought to be prepared for running even now it's being freed. So let's check the pointer used by mhi_irq_handler to avoid null pointer access since it is probably released before freeing IRQ. Fixes: 1227d2a20cd7 ("bus: mhi: host: Move IRQ allocation to controller registration phase") Signed-off-by: Qiang Yu Reviewed-by: Manivannan Sadhasivam Tested-by: Kalle Valo Link: https://lore.kernel.org/r/1658459838-30802-1-git-send-email-quic_qianyu@quicinc.com [mani: added fixes tag] Signed-off-by: Manivannan Sadhasivam

Merge tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

2022-08-04T19:12:54+00:00

Pull SPDX updates from Greg KH: "Here is the set of SPDX comment updates for 6.0-rc1. Nothing huge here, just a number of updated SPDX license tags and cleanups based on the review of a number of common patterns in GPLv2 boilerplate text. Also included in here are a few other minor updates, two USB files, and one Documentation file update to get the SPDX lines correct. All of these have been in the linux-next tree for a very long time" * tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (28 commits) Documentation: samsung-s3c24xx: Add blank line after SPDX directive x86/crypto: Remove stray comment terminator treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_406.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_398.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_391.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_390.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_298.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_292.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_179.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 2) treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 1) treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_160.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_152.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_149.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_147.RULE treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_133.RULE ...

Merge tag 'char-misc-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2022-08-04T18:05:48+00:00

Pull char / misc driver updates from Greg KH: "Here is the large set of char and misc and other driver subsystem changes for 6.0-rc1. Highlights include: - large set of IIO driver updates, additions, and cleanups - new habanalabs device support added (loads of register maps much like GPUs have) - soundwire driver updates - phy driver updates - slimbus driver updates - tiny virt driver fixes and updates - misc driver fixes and updates - interconnect driver updates - hwtracing driver updates - fpga driver updates - extcon driver updates - firmware driver updates - counter driver update - mhi driver fixes and updates - binder driver fixes and updates - speakup driver fixes All of these have been in linux-next for a while without any reported problems" * tag 'char-misc-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (634 commits) drivers: lkdtm: fix clang -Wformat warning char: remove VR41XX related char driver misc: Mark MICROCODE_MINOR unused spmi: trace: fix stack-out-of-bound access in SPMI tracing functions dt-bindings: iio: adc: Add compatible for MT8188 iio: light: isl29028: Fix the warning in isl29028_remove() iio: accel: sca3300: Extend the trigger buffer from 16 to 32 bytes iio: fix iio_format_avail_range() printing for none IIO_VAL_INT iio: adc: max1027: unlock on error path in max1027_read_single_value() iio: proximity: sx9324: add empty line in front of bullet list iio: magnetometer: hmc5843: Remove duplicate 'the' iio: magn: yas530: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros iio: magnetometer: ak8974: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros iio: light: veml6030: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros iio: light: vcnl4035: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros iio: light: vcnl4000: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros iio: light: tsl2591: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() iio: light: tsl2583: Use DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr() iio: light: isl29028: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() iio: light: gp2ap002: Switch to DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr() ...

Merge branch 'acpi-bus'

2022-07-29T17:58:52+00:00

Merge ACPI device object management changes for v5.20-rc1. - Use the facilities provided by the driver core and some additional helpers to handle the children of a given ACPI device object in multiple places instead of using the children and node list heads in struct acpi_device which is error prone (Rafael Wysocki). - Fix ACPI-related device reference counting issue in the hisi_lpc bus driver (Yang Yingliang). - Drop the children and node list heads that are not needed any more from struct acpi_device (Rafael Wysocki). - Drop driver member from struct acpi_device (Uwe Kleine-König). - Drop redundant check from acpi_device_remove() (Uwe Kleine-König). * acpi-bus: ACPI: bus: Drop unused list heads from struct acpi_device hisi_lpc: Use acpi_dev_for_each_child() bus: hisi_lpc: fix missing platform_device_put() in hisi_lpc_acpi_probe() ACPI: bus: Drop driver member of struct acpi_device ACPI: bus: Drop redundant check in acpi_device_remove() mfd: core: Use acpi_dev_for_each_child() ACPI / MMC: PM: Unify fixing up device power soundwire: Use acpi_dev_for_each_child() platform/x86/thinkpad_acpi: Use acpi_dev_for_each_child() ACPI: scan: Walk ACPI device's children using driver core ACPI: bus: Introduce acpi_dev_for_each_child_reverse() ACPI: video: Use acpi_dev_for_each_child() ACPI: bus: Export acpi_dev_for_each_child() to modules ACPI: property: Use acpi_dev_for_each_child() for child lookup ACPI: container: Use acpi_dev_for_each_child() USB: ACPI: Replace usb_acpi_find_port() with acpi_find_child_by_adr() thunderbolt: ACPI: Replace tb_acpi_find_port() with acpi_find_child_by_adr() ACPI: glue: Introduce acpi_find_child_by_adr() ACPI: glue: Introduce acpi_dev_has_children() ACPI: glue: Use acpi_dev_for_each_child()

Merge tag 'mhi-for-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-next

2022-07-11T10:28:46+00:00

Manivannan writes: MHI Host -------- Support for new modems: - Quectel EM120 FCCL based on SDX24. This product MHI configuration is same as EM120R-GL modem. - Foxconn Cinterion MV31-W. This product is same as the existing MV31-W modem but sold as a separate product as it uses a different firmware baseline. - Foxconn T99W175 based on SDX55. Core changes: - Moved the IRQ allocation to MHI controller registration phase. Since the MHI endpoint may be powered up/down several times during runtime, it makes sense to move the IRQ allocation to registration phase and just enable/disable IRQs during endpoint power up/down. MHI endpoint ------------ Core changes: - Added error check for dev_set_name() * tag 'mhi-for-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi: bus: mhi: ep: Check dev_set_name() return value bus: mhi: host: pci_generic: Add another Foxconn T99W175 bus: mhi: host: Move IRQ allocation to controller registration phase bus: mhi: host: pci_generic: Add Cinterion MV31-W with new baseline bus: mhi: host: pci_generic: Add support for Quectel EM120 FCCL modem

bus: mhi: ep: Check dev_set_name() return value

2022-07-09T06:27:54+00:00

It's possible that dev_set_name() returns -ENOMEM, catch and handle this. Signed-off-by: Bo Liu Reviewed-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220708015948.4091-1-liubo03@inspur.com Signed-off-by: Manivannan Sadhasivam